You should water an indoor plant the same way you would water an outdoor plant. As long as you follow the general rule of watering your CP just before it gets dry, you will be fine. The difference between indoor and outdoor is that the CP will become dry a lot faster outside. Do not keep your CP in constant water as it will most likely cause root rot. Just keep a close eye on it, and make sure it is always moist.
I have read in this forum that a good way to measure when a good time to water is by weighing the plant (in pot) when it is dry, and then knowing when it hits that weight again, it is time to water. As long as your pot has a drainage hole, don't worry about over-watering.
In terms of dormancy, I myself have never dealt with it. But I have read that it is best to allow your plant to go into dormancy so it has more energy the following year. A VFT, for example, can technically skip its first year of dormancy, but many feel that it will not be as healthy the next spring. I don't think dormancy is too complicated. You can read more about it
here.
Please listen to what others say about dormancy though, because I have only been growing CPs for about 2 months.